package com.yjy02.bing04;

public class Circle {
    private double radius;
    private final double pai=3.14;
    public Circle(){
        this.radius=1;
    }

    public double getRadius() {
        return radius;
    }

    public void setRadius(double radius) {
        this.radius = radius;
    }
    public double findArea(){
        double findArea = pai*radius*radius;
        return findArea;
    }
}